62 
engrossed, and finally passed, as marked L, on the 6th of 
ary. 
_ The following papers were read at the meetings of the 
January session : — 
Prof. Agassiz, “ On the Individuality among Animals, with 
reference to the Questions of Varieties and Species.” 
Prof. B. Peirce, “On the Elements of the Mathematical 
Theory of Quality.” 
Prof. A. D. Bache, “On the Discussion of Magnetic Ob- 
servations made at Girard College Observatory, in the Years 
1840-45. Parts IV.,V., and VI. Horizontal Force. In- 
vestigation of the Eleven-Year Period, of the Solar Diurnal 
Variation and Annual Inequality, and of the Influence of 
the Moon.” 
Dr. F. A. P. Barnard, “On the Force of fired Gunpowder, 
and the Pressure to which Heavy Guns are actually subjected 
in Firing.” 
Dr. B. A. Gould, “ Reduction of the Observations of 
Fixed Stars made by d’Agelet at Paris during the Years 
1783-85, with a Catalogue of the corresponding Mean 
Places referred to the Equinox of 1800.” 
Prof. Agassiz, “On the Metamorphoses of Fishes.” 
Prof. B. Peirce, “On the Saturnian System.” 
Dr. T. Strong, “ Notes on the Parallelogram of Forces, 
and on Virtual Velocities.” 
Prof. Agassiz, “On the Geographical Distribution of Fishes, 
as bearing upon their Affinities and Systematic Classification.” 
Prof. A. D. Bache, “On the Discussion of Magnetic 
Observations, &c. Parts VIL, VIIL, and IX. Vertical 
Force. Investigation of the Eleven-Year Period, of the 
Solar Diurnal Variation and Annual Inequality, and of the 
Influence of the Moon.” 
Dr. F. A. P. Barnard, “ Description of an Anemograph, 
designed for the University of Mississippi.” 
4 
